Supplementary material from "Frequency dependence shapes the adaptive landscape of imperfect Batesian mimicry"
Posted on 2018-03-16 - 14:15
Despite more than a century of biological research on the evolution and maintenance of mimetic signals, the relative frequencies of models and mimics necessary to establish and maintain Batesian mimicry in natural populations remain understudied. Here we investigate the frequency-dependent dynamics of imperfect Batesian mimicry, using predation experiments involving artificial butterfly models. We use two geographically distinct populations of Adelpha butterflies that vary in their relative frequencies of a putatively defended model (Adelpha iphiclus) and Batesian mimic (Adelpha serpa). We found that in Costa Rica, where both species share similar abundances, Batesian mimicry breaks down, and predators more readily attack artificial butterfly models of the presumed mimic, A. serpa. By contrast, in Ecuador, where A. iphiclus (model) is significantly more abundant than A. serpa (mimic), both species are equally protected from predation. Our results provide compelling experimental evidence that imperfect Batesian mimicry is frequency-dependent on the relative abundance of models and mimics in natural populations, and contribute to the growing body of evidence that complex dynamics, such as seasonality or the availability of alternative prey, influence the evolution of mimetic traits.
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Finkbeiner, Susan D.; Salazar, Patricio A.; Nogales, Sofía; Rush, Cassidi E.; D. Briscoe, Adriana; Hill, Ryan I.; et al. (2018). Supplementary material from "Frequency dependence shapes the adaptive landscape of imperfect Batesian mimicry". The Royal Society. Collection. https://doi.org/10.6084/m9.figshare.c.4033843.v1
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AUTHORS (9)
SF
Susan D. Finkbeiner
PS
Patricio A. Salazar
SN
Sofía Nogales
CR
Cassidi E. Rush
AD
Adriana D. Briscoe
RH
Ryan I. Hill
MR
Marcus R. Kronforst
KR
Keith R. Willmott
SM
Sean P. Mullen